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Semiconductor Devices
Contributed by: Howes
  • 1. What is a diode used for in a circuit?
A) Amplifies the signal
B) Allows current to flow in one direction
C) Regulates voltage
D) Acts as a switch
  • 2. Which material is typically used as the intrinsic semiconductor in a P-N junction diode?
A) Copper
B) Gold
C) Aluminum
D) Silicon
  • 3. What is the function of a transistor?
A) Convert light into electricity
B) Store electrical charge
C) Amplify or switch electronic signals
D) Regulate current
  • 4. Which type of semiconductor material has fewer free electrons than holes?
A) Extrinsic
B) P-type
C) N-type
D) Intrinsic
  • 5. What is the most common type of field-effect transistor?
A) MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor)
B) IGBT (Insulated Gate Bipolar Transistor)
C) JFET (Junction Field-Effect Transistor)
D) BJT (Bipolar Junction Transistor)
  • 6. What is the purpose of a rectifier circuit?
A) Generate oscillations
B) Amplify weak signals
C) Convert AC to DC
D) Filter noise from signal
  • 7. Which type of diode is used to regulate voltage and protect circuits from overvoltage?
A) Light-emitting diode
B) Tunnel diode
C) Zener diode
D) Schottky diode
  • 8. What is the function of a varactor diode?
A) Voltage-controlled capacitance
B) High-power rectification
C) Voltage amplification
D) Temperature sensing
  • 9. What does a P-N junction diode exhibit in the forward bias condition?
A) Acts as an open switch
B) High resistance
C) Increases voltage
D) Low resistance
  • 10. Which of the following is a common application of a diode?
A) Data storage
B) Signal amplification
C) Rectification
D) Voltage regulation
  • 11. What type of semiconductor material has excess free electrons?
A) N-type
B) P-type
C) Intrinsic
D) Extrinsic
  • 12. What is the primary function of a photodiode?
A) Convert light into electrical current
B) Detect magnetic fields
C) Regulate voltage
D) Amplify weak signals
  • 13. What is the main function of a zener diode?
A) Signal modulation
B) Power amplification
C) Filtering noise
D) Voltage regulation
  • 14. Which diode is known for its very low forward voltage drop?
A) Varactor diode
B) LED
C) Schottky diode
D) Zener diode
  • 15. What does the acronym LED stand for?
A) Light-Emitting Diode
B) Low-Energy Device
C) Linear Energy Detector
D) Longitudinal Energy Diode
  • 16. What is the primary function of a tunnel diode?
A) High-speed switching
B) Temperature sensing
C) Low-power rectification
D) Voltage regulation
  • 17. Which type of diode exhibits a negative resistance characteristic?
A) Photodiode
B) Schottky diode
C) Zener diode
D) Tunnel diode
  • 18. What is a semiconductor device?
A) A device made from a material with semiconductor properties.
B) A device that works only in the presence of a magnet.
C) A device used for underwater communication.
D) A device that emits light when exposed to electricity.
  • 19. Which semiconductor device can store charge and be used in memory circuits?
A) Inductor
B) Resistor
C) Zener diode
D) Capacitor
  • 20. What is a common application of a silicon-controlled rectifier (SCR)?
A) Signal modulation.
B) Motor control.
C) Audio amplification.
D) Voltage rectification.
  • 21. Which semiconductor device is commonly used as a surge protector?
A) Capacitor
B) SCR
C) Transistor
D) Varistor
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